Loose leaf book



Patented A g. 25, v 1936 UNITED. STATES PATENT ()FFHIE.

LOOSE LEAF BUOK will! Bcrbcrich,

Application Heilbronn-on-the-Neckar, Germany January 12, 1935, Serial No. 1,563 Germany November 29, 1934 scla'ims- (cries- 1) This invention relates to improvements in binders or loose leaf book covers, the chief obiect being to provide a device of this character of simple and inexpensive construction.

Similar devices are already known, but they vice becomes useless after a comparatively short time.

Binders or loose leaf book covers are also own which are provided with rigidly fixed filing rings mounted at the'back of the binding or cover and with a rigid upwardly bent holding member. which is apertured for the reception of the extremities of the rings, thus locking the binding rings. The

binder or cover of the present invention is sim- I plified by avoiding the use of a holding member and the necessity of connecting the rings rigidly to the back of the'binder or cover.

According to the present invention the hinder or loose leaf book cover comprises rigid filing rings arranged at the back of the book, and each having an interrupted or cut out portion to aflord two ends, one of which is fixed to a rail or bar, the other end being free for insertion through perforations in the leaves, characterized. by the fact that the closing or opening of the rings isefiected in such a manner that they are moved angularly by reason of the application of pressure to the rail or bar, or the release ofsuch pressure, respectively, caused by one of the book covers,'thus forcing the free extremities of the said rings either against or away from, the support for the loose leaves. I

In order that the said invfii'tion may be clearly understood and readily carried into effect the same vwill now be described more fully, by way of example, with reference to. the accompanying drawing, in whlch:--

Figures land 2 are sectional views of one constructional form of the invention in which the hinder or loose leaf book is in closed position in Figure 1 and in opened position in Figure 2.

Figure 3 is a sectional view of another constructional form in closed position; and v Figure 4 shows in plan the internal part! the embodiment according to Figure 3.

Referring to Figures 1 and 2 of the drawing, the bottom cover a of the book is folded over backwardly at b for a convenient length and is then folded over again at c, forming a rounded off back d, preferably provided with grooves, corrugations or the like, and then passed over to Rings or filing mem constitute the top cover e. bers 1, arranged in parallel relationship and supported by a rail i, are inserted in approximately coinciding perforations-gwhich are provided in the bottom cover a and in the folded back part b in proximity to the back of the cover or binder, the arrangement being such that when the book is being closed, the rail i is engaged at c by the rounded ofl back all and is pressed thereby against the edges of the perforations in the folded back part 72, thus bringing the perforations in the parts a and b in a more coinciding position. This causes the rings 3 to move angularly to a position with the free ends it thereof in engagement with the bottom cover 11, thus holding a pile of leaves I securely in positioniwithin the binders or book, as shown in Figure l, the leaves I being provided with perforations It to receive the rings 1. When the book is opened completely, the rail i is relieved of the pressure exerted thereon by the back and the perforations 9 being in a less coinciding position will cause the rings, moving angularly, to slide partially through these perforations. This movement of the rings causes the free extremities h of the rings 1 to be forced away from the bottom cover a, the rings 1 being then in open position shown in Figure 2, whereby leaves may be placed in, or removed from, the book.

In the embodiment shown in Figures 3 and i there is provided a rigid support m, one end of which may, if desired; be folded over as shown. The support m is adapted to be inserted into a pocket 11 of the book cover or binder a, d, e, with the rings 1 extending through perforations 9 provided in the rigid support m and in the folded over part, in such a manner, that when the support m is inserted into the pocket 11., the rail i is held stationary relatively to the pocket, either by abutting against one edge of the mouth of the pocket or, if the rail enters the pocket, by the friction between the rail and the wall of the pocket, thus causing the rings to be moved in the perforations g as the support m ismoved rail i effects angular movement of the rings 1 unof the perforations 0. I

7 further into the pocket n. Thepressure on the g 1 By reason of the rings extending through perforations k in the leaves I the leaves, when the free extremities h of the rings I are pressed against the support m, are heldsecurely in position within the binder or book. When the support m is drawn outwardly of the pocket 11, the rail i is relieved of pressure and the free ends it of the rings 1 move away from the support 121. enabling leaves to be removed, or fresh leaves to be added.

It will be understood that as soon as the pressure on the rail i is released, the rail tends to move away from the perforations g and on account of the perforations in one part being then out of approximate coincidence with, the' perforations in the other part, the rings, as a result thereof are caused to move angularly to open position by the force exerted on them due to the movement of one perforated part relatively to the other perforated part.

Figure 4 shows the rigid folded over support m together with the rail or bar 2' and the filing rings but without the leaves and without the book cover proper.

In Figure 5, which shows a slight modification of the constructional form, shown in Figures 1 and 2, the extremities of the rings connected with the said rail or bar i are bent inwardly with respect to the circumference of the rings, and, as shown, lies approximately parallel to the bottom cover a.

What I claim is:-

l. A loose leaf book comprising a cover, a bar extending along the book adjacent the back portion thereof, open rings attached to the bar at one end and having their free ends cooperating with perforations in the leaves of the book, and a member associated with the cover and placed adjacent the bar and provided with perforations through which the rings extend, which member can slide transverse relatively to the cover to cause the rings to tilt circumferentially about their attached ends.

2. A loose leaf book comprising a cover, a bar extending along the book adjacent the back portion thereof, open rings attached to the bar at one end and havingtheir free ends cooperatin with perforations in the leaves of the book, and a fold extending flexibly around the edge of the bar and merging into the back portion of the cover and provided with perforations through which the rings extend, which fold and the adjacent part of the back portion of the cover have superposed parts capable of transverse sliding relatively to each other and to cause the rings to tilt circumferentially about their attached ends.

3. A loose leaf book comprising a cover with a pocket in one of its sides, a bar extending along the book adjacent the back portion thereof and arranged to be held stationary at the mouth of the pocket, open rings attached to the bar at one end and having their free ends cooperating with perforations in the leaves of the book, and a member having perforations adjacent the bar through which perforations the rings extend, which member is movable laterally in the pocket in such a manner as to cause the rings to tilt circumferentially about their attached ends.

WILLI BERBERICH. 

